9 security gadgets for mobile devices

Nowadays, when it seems like every week brings news of a new security breach, it seems appropriate to modernize an old saw by saying: You can never be too rich, too thin -- or too secure.

Most of these security breaches relate to stolen or illegally accessed databases, of course. But let's not overlook a more local problem: The security of your mobile devices and data. Your smartphone, your tablet and even your wallet all contain oodles of critical information -- business and personal alike -- that could be hacked, scanned, stolen or otherwise compromised.